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Cornerstone · Grades 3–5 Keystones #1 4 February 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 5⁄6

    Answer: 29⁄24
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 46

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 153 in the ratio 4:2:3

    Answer: 68, 34 and 51
  5. 5. Statistics Mean

    Find the mean of: 11, 11, 9

    Answer: 10.333333333333

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